Improvement in grates



W. LEE & B. w. PARKER.

Grates.

0,154,146, Patented Aug.18,1874.

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THE single CD- FHOT0UTH.39I|'H PARK FLACE,N.Y.

UNITED STATES PATENT OFFICE.

IMPROVEMENT IN GRATES.

Specification forming part of Letters Patent No. 154,146, dated August18, 1874 applicatlon filed January 28, 1874.

To all whom it may concern;

Be it known that we, WILLIAM LEE and BENJAMIN W. PARKER, of Columbus, inthe county of Franklin, State of Ohio, have invented certainImprovements in Open Grates and Fire-Places for Burning Goal, of whichthe following is a specification:

The invention is designed to eifect an improvement in the draft andcarry the smoke with certainty to the smoke-flue and with the leastescape of heat; and also to effect the largest and most diffusive degreeof radiation of heat outward into the room where the grate and fireplacemay be used.

Figure l is the front elevation of a section of the plan of thecombination. Fig. 2 is an outline of the grate or grate-basket. Fig. 3is an elevation of a section of the left-hand side of the grate andfire-place.

A A in Fig. 1 is the front line of the grateframe and fire-place. B B inFig. 3 is a side jamb set at a right angle to the front, and isperpendicular. O (J in Fig. 3 is a diagonal jamb set at an angle ofabout forty-five degrees to side jamb B B in Fig. 3.

In Fig.1, 0 G and O O, the two diagonal jambs are represented, but, Fig.1 being designed only to show a front elevation, the side jambs are notshown.

D D in Fig. 3 is a section of the back, the whole being represented inFig. 1, D D, and is parallel to the front A A. E E F in Fig. 1represent, in sections, a cap or canopy rising vertically from thediagonal jambs and the back, Fig. 1, G D (J-that is, E E from thediagonal jannbs G G, and F from the back D- each section of the cap orcanopy inclining forward over the fire-place at an angle of aboutforty-five degrees. H G H in Fig. 2 are sections of the receding frontline of the grate or grate-basket, G being parallel to the back andfront of the fire-place, (Fig. 1, D and AA,) and H H circling from G tothe ends or sides, so as to be convex at the front of these sections. BB in Fig. 2 are parallel to the side jambs represented in Fig. 3, B B,and G O in tions H H,

Fig. 2 are parallel to the diagonal jambs G G in Fig. 3.

The cap or canopy, Fig. 1, E F E, is an adaptation to the diagonalradiating jambs, Fig. 1, O G and O O, and the back of the fireplace D D,for the purpose of radiating verticall y downward and divergentlyoutward, and the cap or canopy is also designed to contribute to theformation of a draft-channel. to the smoke-flue.

The fire-grate, Fig. 2, outlines H G H, B O D, O B, is also anadaptation to the side jambs, Fig. 3, B B, to the diagonal jambs, Fig.1, O C, and to the back, Fig. 1, D D, While, by receding, Fig. 2, H G H,it increases the radiating-surface, and, by the convexity of thesecradiates divergently and at the same time the recess G, Fig. 1, formsthe commencement of a draft-channel back of the back part of the throator opening to the smoke- The result of the whole combination is, first,a complete draft-channel, commencing at the receding of the grate, Fig.2, G, and continuing by the back, Fig. 1, D, between the diagonal jambsO O, and by the middle section of the cap or canopy, Fig. 1, F, to thethroat of the smoke-flue; second, an arrangement of the radiating partsor surfaces to radiate the heat from the fuel divergently anddifiusively, not only by the diagonal jambs, but also by the cap orcanopy and by the grate.

We make no claim of invention for the diagonal jambs, Fig. l, O 0; but

We claim as our invention- The canopy composed of three planes, E F E,resting upon the diagonal jambs O G, connected by the section D, incombination with the backwardly-curving portions H of the grate,connected by the plane portion G.

WlLLIAM LEE. BENJAMIN W. PARKER.

Witnesses:

BENJAMIN T. BENNETT, JOSEPH O. PARKER.

